22316387 has 4 divisors (see below), whose sum is σ = 22368360. Its totient is φ = 22264416.

The previous prime is 22316383. The next prime is 22316389. The reversal of 22316387 is 78361322.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22316387 - 2² = 22316383 is a prime.

It is a super-3 number, since 3×22316387³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22316381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25337 + ... + 26202.

It is an arithmetic number, because the mean of its divisors is an integer number (5592090).

Almost surely, 2^22316387 is an apocalyptic number.

22316387 is a deficient number, since it is larger than the sum of its proper divisors (51973).

22316387 is an equidigital number, since it uses as much as digits as its factorization.

22316387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51972.

The product of its digits is 12096, while the sum is 32.

The square root of 22316387 is about 4724.0223327161. The cubic root of 22316387 is about 281.5407704273.

The spelling of 22316387 in words is "twenty-two million, three hundred sixteen thousand, three hundred eighty-seven".